@unpublished{repository41713,
            note = {Unpublished},
           title = {Sertifikat Narasumber},
       publisher = {Universitas Muhammadiyah Prof.DR.Hamka},
          author = {Khavisa Pranata, Khavisa},
             url = {http://repository.uhamka.ac.id/id/eprint/41713/}
}